Ludwig dttrr



(No Model.)

L. DURR. PETROLEUM VAPOR BURNER WITH OVERHEATER.

No. 568,842. Patented Oct. 6; 1896.

UNITED STATES r'ATENT FFICE.

LUDWJIG Dunn, OF BREMEN, GERMANY.

PETROLEUM-VAPOR BURNER WITH OVERHEAT ER.

SPECIFICATION forming part of Letters Patent No. 568,842, dated October6, 1896.

Application filed July 8, 1893. Serial N 179,931. (No model.) Patentedin Germany March 28, 1893,1To. 73.613, and June 1'], 1893.110. 74,274;in Switzerland June 28, 1893.110. 7,254.; in England June 29,1893,No.12,771; in France July 5, 1893, No. 231.339; in Belgium July 5.1893,1l0. 105.415; in Austria-Hungary October 10, 1893, No. 34,848 andNo. 54,403; in Italy December 31, 1893, XXVIII, 35,188, LXIX, 89, and inDenmark June 20, 1896,1T0. 83.

T aZZ whom it may concern.-

of the King of Bavaria, residing at Bremen, in the Empire of Germany,have invented new and useful Improvements in Petroleum-Vapor Burnerswith Overheaters, (for which I have obtained the following patents: inGermany, No. 73,613, dated March 28, 1893, and

.No. 74,274, dated June 17, 1893; in Austria- Hungary, No. 34,848 tom.XLII, fol. 3,938, and 54,403, tom. XXVII fol. 3,912, dated October 10,1893; in England, No. 12,771, dated June 29, 1893 in Denmark,No. 83,dated June 20, 1895; in Switzerland, No. 7,254,dated June 28, 1893; inFrance, No. 231,339, dated July 5, 1893; in Belgium, No. 105,415,datedJuly 5, 1893, and in Italy Reg. Gen, VoLXXVIII, No. 35,188, Reg.Att, Vol. LXIX, No. 89, dated December 31, 1893,) of which the followingis a specification.

This invention relates to a petroleumburner for lighting and heatingpurposes in which two burners are so combined that while one is placedin a protected position and serves toheat a superheater body the otheris mounted on the free end of the superheater or burner-jar, so that itsflame remains uncovered and may be fully utilized for lighting andheating urposes.

In the accompanying drawings, Figure 1 is a longitudinal section of myimproved vaporburner; Fig. 2, a section on line cf, Fig. 1; and Fig. 3,a section on line a (Z, Fig. 1.

A is the main petroleum-s11 pply pipe, which is provided with aregulating device B, and leads from a reservoir suspended at a higherlevel than the burner. This supply-pipe terminates in a metaldistributing-head 0, preferably arranged at the bottom of the burner-jar. From this distributing-head the pipe passes to the gasifying device.

To gasify the petroleum and to superheat at the same time thepetroleum-vapor, I employ an annular vessel K, which may be formed ofsheet-copper, andwhosinn er Wall may be smooth, corrugated or ribbed soas to provide the largest possible surface. This gasifying vessel isarranged within a jar F and is preferably secured at its rear end to thesuperheater-burner itself, while it carries at its forward end the mainburner E.

Into the upper part of the gasifying device there discharges apetroleum-pipe L, that extends nearly to the forward end of the same,Fig. 1, and is provided at its lower side with a series of fineperforations through which the petroleum escapes over the whole innerwall of the gasifyin g device. In order to produce a uniformgasification in the lower part of the gasifying device, there isprovided close to the lower half of its inner wall an evaporating-cup M,which receives the petroleum that has drizzled down, and which offersbut a thin layer of petroleum for evaporation.

Rectangularly with respect to the inlet-pipe L there branch off from thegasifying body close to its inner end two pipes D, that conduct thepetroleum-gas from the gasifying body K to the superheater-burner D,which may be of ordinary or suitable shape.

In the fore part of the gasifying body is placed the main burner E,having two inletpipes N, which are so arranged that petroleum-gas onlyand not liquid petroleum can befed to the burner. This result iseffected preferably in the manner illustrated in Fig. 3, where theinlet-pipes N extend so far into the interior of the gasifying devicethat the petroleum drizzlin g down cannot fall into the inlet openingsof ,such pipes. The main burner E is placed so far in front that theburning flame clears the jar and is exposed.

To ignite a burner of the above-described construction, I proceed asfollows: A burning stopple, wad, or the like is introduced into thegasifying body and the latter is highly heated. The regulating devicefor the petroleum supply is opened first but little and then a littlemore, while the petroleum drizzling down on the heated wall K of thegasifying device is gasified. As soon as a sufficient quantity ofpetroleum-gas has been produced it flows through the two pipes D intothesuperheater-burner and the latter is ignited by the flame of the heatingmaterial in the gasifying body. This material is now re moved, if notconsumed, and the flame of the burner D spreads over the whole innerwall of the gasifying' device, so that the evaporation of the petroleumis accelerated and the supply of petroleum may be correspondinglyincreased. The flame of the rear burner thus ignites the main flame bythe gas escaping from the front burner. As the heat of the rear burner Daffects entirely the inner wall of the gasifying' device not onlyagasification of the petroleum takes place,bnt in the highlyheatedgasifying' device the petroleum-gas is really superheated, so thatliquid oil will not be carried to the burners the exceedingly hightendency of the petroleum-vapor to condense bcing avoided by thesuperheating' of the gas. The burner D can therefore conveniently bedesignated as a superheaterburner and the gasifying body K as asuperheater.

The air necessary for the flame of the superheater-burner flows in thedirection indicated by the arrows between the superheater K and the jarF into the space G H, where a prepara tory heating is effected. It isthen sucked at the side of the burner into the superheaterflame and thussulficiently penetrates the flame to produce a complete combustion. Asthe superhcater-flame, when ignited, is

always protected against violent gusts of wind any extinction of themain flame would be only momentary, as the main burner would beimmediately relighted by the superheaterflame without allowing anyunburned gas to escape.

I do not restrict myself to the form of vaporbu rner illustrated in thedrawings, as the same can be varied. The modifications to be made in theconstruction will of course depend on the use to which the burner is tobe put.

\Vhat I claim is-- The combination of a casing with an inclosed annulardrum, a petroleum'feed pipe entering said drum, a burner placed withinthe casing back of the drum, a second burner placed in front of thecasing Within the drum, and with feed-pipes that connect the interior ofthe drum with the burners, substantially as specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

\Vitnesses:

Lunwio GLASER, GUSTAV lII'iLsMnNN.

